Unitary Structure of the QCD Sum Rules and KYN and KYΞCouplings

Abstract

New relations between QCD Borel sum rules for strong coupling constants of K-mesons to baryons are derived. It is shown that starting from the sum rule for the coupling constants $g_{πΣΣ}$ and $g_{πΣΛ}$ it is straightforward to obtain corresponding sum rules for the $g_{K Y N}$, $g_{K Y Ξ}$ couplings, $Y=Σ,Λ$.